I have found the post from NIXCRAFT very interesting , it literally make a network admins life easier #1: Scan a single host or an IP address (IPv4) ### Scan a single ip address ### nmap 192.168.1.1 ## Scan a host name ### nmap server1.cyberciti.biz ## Scan a host name with more info### nmap -v […]
When we type the command yum, we encounter the error such as the one below. # yum update Loaded plugins: downloadonly, fastestmirror Loading mirror speeds from cached hostfile Traceback (most recent call last): File “/usr/bin/yum”, line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File “/usr/share/yum-cli/yummain.py”, line 309, in user_main errcode = main(args) […]
Boot in Rescue Mode Please perform the following steps: Boot from a CentOS installation disc (for example, CD #1 or DVD). Type “linux rescue” at the “boot:” prompt. Mount all filesystems in read-write mode. Create the New Initrd Change root to real root (‘/’) on your hard disk and make the initrd. (The example is […]
it will create a 100% replica simply by using the following command. I’ve never once had any problems with it. dd if=/dev/sda of=/dev/sdb sdb should be same or bigger than sda
The last month has seen probably the largest distributed denial-of-service (DDoS) attack ever. A massive 300Gbps was thrown against Internet blacklist maintainer Spamhaus’ website but the anti-spam organisation , CloudFlare was able to recover from the attack and get its core services back up and running. Spamhaus, a group based in both London and Geneva, is […]
you can manually add Ips and names to File /usr/local/etc/lightsquid/realname.cfg Default content: 192.168.1.2 Sergey Erokhin 192.168.1.1 Jon Doe 192.168.1.3 Tech Good
However, it was an easy problem to solve #rpm –import http://elrepo.org/RPM-GPG-KEY-elrepo.org before downloading the required RPM file: – #rpm -Uvh http://elrepo.org/elrepo-release-6-4.el6.elrepo.noarch.rpm and installing the HFS+ drivers: – # yum install kmod-hfsplus # mount /dev/sdb1 /mnt/sdb1
This article will guide you on how to setup POP email account from iPad. 1. If this is the first account you’re setting up on the iPad tap Mail. Otherwise, from the Home screen tap Settings -> Mail -> Accounts -> Add Account. Tap Other […]
open a new tab type address chrome://net-internals/#dns and press the “Clear host cache” button.
If you are unable to view your website, or if your website is still resolving from an old server after changing the nameservers, flushing your DNS cache may resolved the issue. Details on how to flush your DNS cache on a machine running the MAC operating system can be found below. 1. Open up a […]
